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Journal of the Korean Institute of Electromagnetic and Science 2003;3(1):45-49.
Noninvasive Life Signal Detecting Systems and Their Analyses
Jung-Min Park, Dong-Hyuk Park, Seong-Ook Park
School of Engineering, Information and Communication University
Abstract
Wireless life signal detecting system is implemented with using the mechanism of Doppler Effect. This system can measure the respiration and heart rates with the periodic movement of skin and muscle near the heart. The system is consisted of antenna, RF transmitter, receiver, and display part. We did use two operating frequencies at 1.9 ㎓ and 10 ㎓. Firstly, the link budget about detecting system is analyzed and the signal detected from the system is compared with electrocardiogram(ECG) of monitor which is using for patient monitoring in hospital. Secondly, the detection of vital sign is also performed according to the different distances, and including behind the wall.
Key words: Wireless System, Life Signal, Doppler Effect, Heat Rate, Respiration
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